Aqueous degradation and chemical passivation of yttria-tetragonally-stabilized zirconia at 25 deg C

The objective of this study was to establish the mechanism(s) controlling degradation of yttria-tetragonally-stabilized zirconia (Y-TZP) powder in aqueous suspensions and determine the significance of this degradation to the aqueous physical chemistry of Y-TZP. Experiments were performed on commerci...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2002-06, Vol.85 (6), p.1403-1408
Main Authors: R Allen Kimel, Adair, James H
Format: Article
Language:English
Online Access:Get full text
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Summary:The objective of this study was to establish the mechanism(s) controlling degradation of yttria-tetragonally-stabilized zirconia (Y-TZP) powder in aqueous suspensions and determine the significance of this degradation to the aqueous physical chemistry of Y-TZP. Experiments were performed on commercially available Y-TZP powder placed in aqueous suspensions at 25 deg C. Experimental investigations included analysis of the aqueous chemistry of Y-TZP in water via ICP-MS, determination of the surface and bulk structure of the powder via XRD and solid-state NMR, and observation of changes in surface charges via zeta potential determinations. The goal of this study was to control the surface chemistry of Y-TZP in aqueous suspension to promote dispersion and permit aqueous processing of Y-TZP powders.
ISSN:0002-7820
1551-2916